About the OD, i didn't really look at it that much. Basicly took it out by automation. I CAN tell you that you can use the OD tray and a fullsize graphics card, but you have to remove one of the 120mm fans on top. And you can't use a top H105/H100i for example.
But err... who uses floppy and disc these days D: Dat shit is beyond unconvenient.